When I open "Manage Applications" it takes AGES to load!

When i go to manage applications, to uninstall for example, the list takes AGES to load... like 15 seconds... its like the phone has crashed because it just hangs... then it finally all appears. Sometimes it is instant, other times it takes ages... is this normal?

I think it might be linked to the fact that it evaluates the amount of space and cache each application takes up. I find that the first time i go there, it takes about 15sec. Every time afterwards it is quick until I reboot or use apps that shuffle with stored cache. I find it reasonable for the 15sec on these occasions in order to get accurate feedback.